SYNOPSIS

DESCRIPTION

"ExtUtils::Mksymlists" produces files used by the linker under some OSs
during the creation of shared libraries for dynamic extensions. It is
normally called from a MakeMaker-generated Makefile when the extension
is built. The linker option file is generated by calling the function
"Mksymlists", which is exported by default from "ExtUtils::Mksymlists".
It takes one argument, a list of key-value pairs, in which the following
keys are recognized:

DLBASE

This item specifies the name by which the linker knows the
extension, which may be different from the name of the
extension itself (for instance, some linkers add an '_' to the
name of the extension). If it is not specified, it is derived
from the

NAME

attribute. It is presently used only by

OS2

and Win32.

DL_FUNCS

This is identical to the

DL_FUNCS

attribute available via MakeMaker,
from which it is usually taken. Its value is a reference to an
associative array, in which each key is the name of a package, and
each value is an a reference to an array of function names which
should be exported by the extension. For instance, one might say
"DL_FUNCS => { Homer::Iliad => [ qw(trojans greeks) ],
Homer::Odyssey => [ qw(travellers family suitors) ] }". The
function names should be identical to those in the

XSUB

code;
"Mksymlists" will alter the names written to the linker option
file to match the changes made by xsubpp. In addition, if
none of the functions in a list begin with the string boot_,
"Mksymlists" will add a bootstrap function for that package,
just as xsubpp does. (If a boot_<pkg> function is
present in the list, it is passed through unchanged.) If

DL_FUNCS

is not specified, it defaults to the bootstrap
function for the extension specified in

NAME.

DL_VARS

This is identical to the

DL_VARS

attribute available via MakeMaker,
and, like

DL_FUNCS,

it is usually specified via MakeMaker. Its
value is a reference to an array of variable names which should
be exported by the extension.

FILE

This key can be used to specify the name of the linker option file
(minus the OS-specific extension), if for some reason you do not
want to use the default value, which is the last word of the

NAME

attribute (e.g. for "Tk::Canvas",

FILE

defaults to "Canvas").

FUNCLIST

This provides an alternate means to specify function names to be
exported from the extension. Its value is a reference to an
array of function names to be exported by the extension. These
names are passed through unaltered to the linker options file.
Specifying a value for the

FUNCLIST

attribute suppresses automatic
generation of the bootstrap function for the package. To still create
the bootstrap name you have to specify the package name in the